Ticket #12490: wp_specialchars_to_esc_html.diff

wp-admin/upload.php

@@ -394 +394 @@
                 <td class="media column-media"><strong><a href="<?php echo get_edit_post_link( $post->ID ); ?>" title="<?php echo esc_attr(sprintf(__('Edit &#8220;%s&#8221;'), $att_title)); ?>"><?php echo $att_title; ?></a></strong><br />
                 <?php
                 if ( preg_match( '/^.*?\.(\w+)$/', get_attached_file( $post->ID ), $matches ) )
-                        echo wp_specialchars( strtoupper( $matches[1] ) );
+                        echo esc_html( strtoupper( $matches[1] ) );
                 else
                         echo strtoupper( str_replace( 'image/', '', get_post_mime_type() ) );  
                 ?>